258986 has 16 divisors (see below), whose sum is σ = 478464. Its totient is φ = 102384.

The previous prime is 258983. The next prime is 258991. The reversal of 258986 is 689852.

It is not an unprimeable number, because it can be changed into a prime (258983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (29904).

2²⁵⁸⁹⁸⁶ is an apocalyptic number.

258986 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

258986 is a deficient number, since it is larger than the sum of its proper divisors (219478).

258986 is a wasteful number, since it uses less digits than its factorization.

258986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445.

The product of its digits is 34560, while the sum is 38.

The square root of 258986 is about 508.9066712080. The cubic root of 258986 is about 63.7419623341.

The spelling of 258986 in words is "two hundred fifty-eight thousand, nine hundred eighty-six".